Caroline Wozniacki's mother Anna at the 2010 US Open in the Flushing neighborhood of the Queens borough of New York City. (Photo: Getty Images)

Li Na's mother Yan-Ping holds a poster of her daughter at her home in Wuhan, central China's Hubei province as she watches her daughter on television play in the 2011 Australian Open women's singles final. (Photo: AFP/Getty Images)